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Gathering detailed insights and metrics for fast-diff

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Gathering detailed insights and metrics for fast-diff

fast-diff - 1.3.0 | npmpackage.info

fast-diff

A fast Javascript string diff

1.3.0

694

Apache-2.0

JavaScript

51.09 kB

3.1

Installations

npm install fast-diff

Developer Guide

BETA

Typescript

Yes

Module System

CommonJS

Node Version

18.16.0

NPM Version

9.5.1 Pull Requests

Open

0

Total

12

Closed

8

Merged

4

Issues

Open

2

Total

13

Closed

11

Releases

Unable to fetch releases

Languages

JavaScript

JavaScript (100%)

Developer

jhchen

Download Statistics

Total Downloads

Last Day

Last Week

Last Month

Last Year

GitHub Statistics

Apache-2.0 License

694 Stars

40 Commits

46 Forks

13 Watchers

4 Branches

4 Contributors

Updated on Jul 10, 2025

Maintainers

View All 4 Contributors

Package Meta Information

Latest Version

1.3.0

Package Id

fast-diff@1.3.0

Unpacked Size

51.09 kB

Size

13.99 kB

File Count

NPM Version

9.5.1

Node Version

18.16.0

Published on

May 19, 2023

Total Downloads

Cumulative downloads

Total Downloads

NaN

Last Day

NaN

Compared to previous day

Last Week

NaN

Compared to previous week

Last Month

NaN

Compared to previous month

Last Year

NaN

Compared to previous year

Weekly Downloads

Monthly Downloads

Yearly Downloads

Dev Dependencies

lodash nyc seedrandom

Fast Diff

This is a simplified import of the excellent diff-match-patch library by Neil Fraser into the Node.js environment. The match and patch parts are removed, as well as all the extra diff options. What remains is incredibly fast diffing between two strings.

The diff function is an implementation of "An O(ND) Difference Algorithm and its Variations" (Myers, 1986) with the suggested divide and conquer strategy along with several optimizations Neil added.

1var diff = require('fast-diff');
2
3var good = 'Good dog';
4var bad = 'Bad dog';
5
6var result = diff(good, bad);
7// [[-1, "Goo"], [1, "Ba"], [0, "d dog"]]
8
9// Respect suggested edit location (cursor position), added in v1.1
10diff('aaa', 'aaaa', 1)
11// [[0, "a"], [1, "a"], [0, "aa"]]
12
13// For convenience
14diff.INSERT === 1;
15diff.EQUAL === 0;
16diff.DELETE === -1;

No vulnerabilities found.

10

Dangerous-Workflow

Determines if the project's GitHub Action workflows avoid dangerous patterns.

10

Binary-Artifacts

Determines if the project has generated executable (binary) artifacts in the source repository.

10

License

Determines if the project has defined a license.

5

Vulnerabilities

Determines if the project has open, known unfixed vulnerabilities.

1

Code-Review

Determines if the project requires human code review before pull requests (aka merge requests) are merged.

0

Pinned-Dependencies

Determines if the project has declared and pinned the dependencies of its build process.

0

Token-Permissions

Determines if the project's workflows follow the principle of least privilege.

0

Maintained

Determines if the project is "actively maintained".

0

CII-Best-Practices

Determines if the project has an OpenSSF (formerly CII) Best Practices Badge.

0

Security-Policy

Determines if the project has published a security policy.

0

Fuzzing

Determines if the project uses fuzzing.

0

Branch-Protection

Determines if the default and release branches are protected with GitHub's branch protection settings.

0

SAST

Determines if the project uses static code analysis.

Score

3.1

/10

Last Scanned on 2025-07-07

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